During the 19th century, the centre of Poznań gained a number of institutions of key significance for the city’s Polish residents. Despite resistance from the Prussian authorities, such institutions flourished in the fields of culture, science, society and economics. They additionally gave a new dimension to Poznań’s public space. The Raczyński Library, the Bazar and the Poznań Society of the Friends of Arts and Sciences all came to stand for perseverance in building a modern Polish society. This array of mutually-supportive institutions combined into an informal centre of “Polish power” in the heart of Poznań.